Digestive

Medicines for Constipation in children

A very common problem in children of hard, infrequent or difficult stools — usually not serious and treatable, though it can become a stubborn cycle needing consistent management.

Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.

Quick answer

What is Constipation in children?

Constipation is very common in children and means passing stools that are hard, infrequent, large, or painful and difficult to pass. It can start for various reasons — a change in diet or routine, not drinking enough, a painful or frightening experience passing stool, toilet training, or illness — and often becomes a self-reinforcing cycle: passing a hard stool hurts, so the child holds on to avoid the pain, which makes the stool harder and larger, making the next one more painful.

  • How it is treated: Treatment usually works well but needs consistency and patience.
  • Self-care: A balanced diet with enough fibre and fluids, encouraging regular, relaxed toilet sitting (such as after meals), a positive unpressured approach, rewards for trying, and continuing prescribed laxatives for as long as advised (not stopping too soon) all help.
  • When to seek help: See a GP or health visitor about a child with hard, infrequent or painful stools, soiling, or tummy pain, for advice and treatment.

What it is

Constipation is very common in children and means passing stools that are hard, infrequent, large, or painful and difficult to pass. It can start for various reasons — a change in diet or routine, not drinking enough, a painful or frightening experience passing stool, toilet training, or illness — and often becomes a self-reinforcing cycle: passing a hard stool hurts, so the child holds on to avoid the pain, which makes the stool harder and larger, making the next one more painful. Signs include infrequent or hard stools, tummy pain, straining, holding-on behaviours (such as crossing the legs or hiding), reduced appetite, and, importantly, sometimes soiling — where soft or liquid stool leaks around a hard blockage, which can be mistaken for diarrhoea and is not the child's fault. It is usually not due to a serious underlying condition, and it is very treatable, though it can take persistence.

How it is treated

Treatment usually works well but needs consistency and patience. If there is a hard build-up of stool (impaction), the first step is to clear it, typically with laxative medicines prescribed at the right dose, which are safe and effective. After that, ongoing (maintenance) laxative treatment is often continued for some time to keep the stools soft and comfortable and to break the holding-on cycle — stopping too soon commonly leads to it coming back. Alongside medicines, measures help: a balanced diet with enough fibre and fluids, encouraging regular, relaxed toilet sitting (for example after meals), a positive and unpressured approach to the toilet, and rewards for effort rather than results. Soiling improves as the constipation is treated. Any red-flag features or failure to respond prompt further assessment. Support and reassurance for the family are important, as it can be stressful. Most children do very well with consistent treatment.

For this condition, these medicines

Medicine classes used for Constipation in children

Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.

Beyond medication

Lifestyle and self-care

A balanced diet with enough fibre and fluids, encouraging regular, relaxed toilet sitting (such as after meals), a positive unpressured approach, rewards for trying, and continuing prescribed laxatives for as long as advised (not stopping too soon) all help.

When to get help

When to see a doctor

See a GP or health visitor about a child with hard, infrequent or painful stools, soiling, or tummy pain, for advice and treatment. Seek assessment for constipation from very early infancy, with significant weight loss, blood, or other worrying features.

999Emergency — call 999 or go to A&E
111Urgent advice — call NHS 111 or use 111 online
GPNon-urgent — see your GP or pharmacist

Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.

Answers

Constipation in children: frequently asked questions

Why does my child soil themselves if they are constipated?

When hard stool builds up, softer or liquid stool can leak around it, causing soiling that may look like diarrhoea. It is a sign of constipation, not deliberate, and improves as the constipation is treated. It is not the child's fault.

Are laxatives safe for children?

Yes — laxatives prescribed for childhood constipation are safe and effective when used as directed, and are often needed for a while to keep stools soft and break the cycle. Stopping too soon commonly leads to the constipation returning.

Building a patient-information or formulary resource?

We create evidence-led, dose-free clinical references and decision aids for teams.

☎ Call Get a Proposal